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Finding the Fourth Proportional to 98,418.22, 135,747.16 and 65,696.13

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Solution

The fourth proportional to 98,418.22, 135,747.16 and 65,696.13 is: 90,613.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,418.22 : 135,747.16 = 65,696.13 : x
  2. Step 2: Convert to fraction form
    98,418.22/135,747.16 = 65,696.13/x
  3. Step 3: Cross multiply
    98,418.22x = 135,747.16 × 65,696.13
  4. Step 4: Simplify right side
    98,418.22x = 8,918,062,906.25
  5. Step 5: Solve for x
    x = 8,918,062,906.25/98,418.22
  6. Step 6: Final answer
    x = 90,613.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.